CN101632065A - Dynamically configurable logic gate using a nonlinear element - Google Patents
Dynamically configurable logic gate using a nonlinear element Download PDFInfo
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Abstract
Dynamically Configurable Logic Gate Using a Nonlinear Element A dynamically configurable logic gate includes an input summer for receiving a first input signal and a second input signal to generate a summed input signal. Further the dynamically configurable logic gate includes a nonlinear element that applies a nonlinear function to the summed input signal to produce a nonlinear output signal. The dynamically configurable logic gate output signal corresponds to one of a plurality of different logic gates responsive to adjusting the summed input signal and/or the nonlinear function. In another embodiment, the dynamically configurable logic gate includes feedback to one of the inputs. The dynamically configurable logic gate receives the two inputs and operates as one of a plurality of different logic gate types so as to produce an output signal that corresponds to a memory latch according to a selection of the control signal. An array structure of dynamically configurable logic elements is also disclosed.
Description
Invention field
This invention relates to the dynamic calculation field, relates in particular to the configurable computing architecture about the logic gate of using nonlinear element.
Background technology
Traditional computing system relies on the incompatible realization of static group one or more predetermined the Boolean algebra function and/or the storeies of logic gate.In the static calculation system, the different nextport hardware component NextPort of computing system can not reconnect or reconfigure in operating process.For example, in a single day the nextport hardware component NextPort function that similar logic gate or storer latch creates, and just can not dynamically change.
Even so, some computing modules can reconfigure in certain limit.For example, field programmable gate array (FPGAs) provides the dirigibility about reconfiguring of certain limit.Such effort is limited in equipment or the assembly of the stream of redirect signal simply or " rewriting " similar FPGA.
Other use chaos or nonlinear element, for example known Chua ' s circuit realizes classical chaology behavior.This Chua ' s circuit is proposed by Leon O.Chua in early days as far back as the 1980's.Being easy to of this circuit realizes making it to become the example that generally use of chaos system in real world.
Though Chua ' s circuit realizes with the shelf assembly easily, is difficult for using the integrated circuit technique manufacturing.Because necessary inductor and capacitor have taken too many circuit region, and a large amount of operational amplifiers uses a large amount of transistors.And, usually restive based on the integrated circuit of Chua ' s circuit because of the unusual sensitivity of assembly.Even the change of a trickle component values also can cause the decay of chaotic vibration exponentially.
In order to reduce the power consumption of this non-linear circuit, the design of simulation need be converted into the design of the less numeral of quiescent dissipation waste.Input value and output valve and all need and the digital value compatibility from the output of non-linear or chaotic function.
In addition, need more large-scale complex logic, will reduce die size simultaneously, reduce chip power-consumption consumption, reduce the complicacy that nonlinear function reconfigures control circuit based on nonlinear function.
Therefore, need a kind of method, circuit and system that the implementation of the low-power consumption of the configurable logic element that uses non-linear or chaotic function is provided.
Summary of the invention
In brief, this disclosure of the Invention a kind of dynamically configurable logic gate.This dynamically configurable logic gate comprises and is used to receive first input signal and second input signal to produce an input summer of total input signal.In addition, thus this dynamically configurable logic gate comprise and use nonlinear function to produce a nonlinear element of nonlinear output signal this total input signal.In response to adjusting this total input signal and/or this nonlinear function, the output signal of this dynamically configurable logic gate is corresponding to one in a plurality of Different Logic doors.
In another embodiment, disclose a kind of dynamically configurable logic gate, it comprises two inputs, 1) control signal, output signal, they feed back to one or more described inputs, 2) dynamically configurable logic gate.This dynamically configurable logic gate receives described two inputs, and as one in a plurality of Different Logic door type, selects based on control signal, produces the output signal that latchs corresponding to storer at least.
A kind of array of dynamic configurable logic element is disclosed in another embodiment.This array comprises a multiplexer, and it is selected first control signal and/or second control signal to produce first array and selects control signal.The first dynamic configurable logic element is included in this array, and wherein this first logic element first selects control signal as one in a plurality of Different Logic component types according to this.In addition, this array comprises the second dynamic configurable logic element, and wherein this second logic element first selects control signal as one in a plurality of Different Logic component types according to this at least.This dynamic configurable logic element arrays is selected control signal in response to first, realizes that at least one logical expression and/or storer latch.
The logical expression that this invention realizes comprises AND, NAND, OR, XOR, NOR, XNOR, NOT, ONE and ZERO door.When nonlinear output signal feeds back to this input summer, produce this output signal that latchs corresponding to storer.
The invention provides the configurable logic element that uses non-linear or chaotic function.The power consumption consumption that reduces, assembly still less and numeral and/or the compatible design of simulation all are a part of advantage of the present invention.
The present invention also provides the advantage of the configurable logic block array that comprises configurable wiring.
Aforesaid and other feature and advantage of the present invention will be apparent in the detailed description of following more embodiments of the invention and corresponding accompanying drawing.
Description of drawings
Theme of the present invention has in the claim of ending place of instructions to be pointed out especially and clearly advocates.The present invention is aforesaid and other feature and advantage are will be in below in conjunction with the description of accompanying drawing apparent:
Fig. 1 is according to synoptic diagram of the present invention, and it has illustrated an embodiment of the level circuit framework of dynamically configurable logic gate.
Fig. 2 has illustrated the implementation of the NAND door of the circuit that uses Fig. 1 according to the present invention.
Fig. 3 is according to synoptic diagram of the present invention, and it has illustrated another embodiment of the level circuit framework of dynamically configurable logic gate.
Fig. 4 has illustrated the implementation of the XOR gate of the circuit that uses Fig. 3 according to the present invention.
Fig. 5 is according to synoptic diagram of the present invention, and it has illustrated another embodiment about the level circuit framework of dynamically configurable logic gate.
Fig. 6 is the synoptic diagram according to input summer among of the present invention, Fig. 5.
Fig. 7 is the output waveform according to logic of the present invention, that realized by dynamically configurable logic gate among Fig. 5.
Fig. 8 is the embodiment that Fig. 3 shows, wherein this importation is not in conjunction with reference voltage.
Fig. 9 and Figure 10 are according to synoptic diagram of the present invention, and it has illustrated the realization example circuit of the nonlinear element that is used for producing Fig. 1 and Fig. 3 nonlinear function.
Figure 11 is a synoptic diagram in a circuit according to the invention, and it has illustrated an embodiment of the memory component of being realized by the D-Latch that is used for dynamically configurable logic gate 1102.
Figure 12 is according to synoptic diagram of the present invention, and it has illustrated an embodiment about the level circuit framework of the dynamically configurable logic gate that uses in bigger array.
Figure 13 has illustrated the xsect of general array according to the present invention.
Figure 14 has illustrated to use and has selected the position to come to be the embodiment of array with the general array element of function distortion according to the present invention.
Figure 15 has illustrated 4 pairs 1 multiplexer according to the present invention.
Figure 16 is according to array of the present invention, can independently control selection in array portion.
Figure 17 is according to sketch of the present invention, that use this dynamic configurable logic to switch between two different cyclic redundancy check (CRC) functions.
Figure 18 is according to sketch of the present invention, that switch between the communication protocol of two user mode machine informations or demoder.
Figure 19 is the sketch according to arithmetic logical unti (ALU) of the present invention, that three changeable functions are arranged.
Embodiment
It will be appreciated that these embodiment are the example of many useful uses of exploitation of innovation instruction herein just.Generally speaking, the statement in the present specification is not construed as limiting the multiple invention that proposes.Further, but some statement is applicable to some creative feature is not suitable for other features.Unless stated otherwise, in general, single element also can be for a plurality of, otherwise still, this does not make its general forfeiture.
The following two pieces of lists of references of the whole introducing of the application: 1) submit the U.S. Patent application No.10/680 of United States Patent (USP) trademark office on October 7th, 2003,271, it is authorized on August 22nd, 2006 and is U.S. Pat 7096437; And 2) submit the U.S. Patent application No.11/304 of United States Patent (USP) trademark office on Dec 15th, 2005,125, in its examination now.
As requested, specific embodiments of the invention disclosed herein.It will be appreciated that disclosed embodiment is an example of the present invention, they can multi-form realization.So specific 26S Proteasome Structure and Function disclosed herein should not be considered as restriction, and, come variation to realize corresponding basis of the present invention with any appropriate detailed structure as instruction those skilled in the art just as the basis of claim.Further, the term of Shi Yonging and phrase become restriction inadequately herein, but the description that can understand the present invention.
Term herein " one " refers to one or more.Term plural number herein refers to two or more.Another refers at least the second or more term herein.Term herein comprises and/or has and refers to and comprise (for example open comprises).Term coupling herein refers to connection, can not be directly to connect or mechanical connection.Term nonlinear element, chaos element and nonlinear function is arranged and the dynamic configurable element of chaotic function can exchange use, and they refer to the responsive dynamic configurable logic that relies on original state.Terminology signal, control, threshold value be any electricity, magnetics, optics, biology, chemistry or above combination, information is converted into the input of analog or digital.
One embodiment of the present of invention are to use a Digital Implementation of the configurable logic element of non-linear or chaos element.The present invention has reduced the loss of quiescent dissipation, has reduced chip circuit area, and input, output and the non-linear or chaos output compatible with the digital circuit realization are provided.But it should be noted that the present invention is not restricted to the digital form realization, and the mode of simulated mode and digital and analog circuit combination is also contained in the spirit and scope of the present invention.
Further, the present invention has eliminated this feedback non-linear or the chaos element.A plurality of non-linear or chaos evolutions and nonessential are between the threshold value or control of these input and output, as long as single chaos evolution is just much of that.Mobile attractor itself mates these inputs, but not according to the rising edge and the negative edge of the chaotic function of attractor, mobile input voltage.
In another embodiment, the invention provides the array that uses configurable wiring to set up the configurable logic block of bigger more complex digital function.
The invention provides chaos logic gate mthods, systems and devices, it can be configured to have the function of Different Logic door.Above logic gate can be " with " (AND) door, " or " (OR) (NOT) door of door, distance (XOR) door and " non-".Change one or more reference voltages of the nonlinear function offer this and/or this door self, can change the function of this dynamically configurable logic gate.
Therefore, as a simple example, creative dynamic configurable logic disclosed herein can be as class door operation, for example AND logic gate; Between operational stage, receive instruction, begin as another kind of logical gate operations or operation, for example the OR logic gate.
The background technology of non-linear or chaotic function
Following table 1 has been illustrated the truth table of fundamental operation.For example the 3rd of the left side the row have illustrated AND door input (I
1, I
2) operation, the 4th row have shown OR door input (I
1, I
2) operation, the 5th row have shown XOR gate input (I
1, I
2) operation.Computing when the second portion of table 1 has shown NOT door input I.
Table 1
The original state of chaos logic gate is by the value representation of x.According to creativeness arrangement disclosed herein, the computing of each basic logical gate: AND, OR, NOT and XOR comprise following three steps:
1, is AND, OR and XOR computing input x → x
0+ X
1+ X
2Be NOT computing x → x
0+ X, wherein x
0The original state of representative system, X=0 works as I=0, and
Work as I=1.
2, chaos is upgraded x → f (x), and wherein f (x) is a chaotic function.
3, threshold value.If in order to obtain to export Z:z=0 f (x)≤x
*And z=f (x)-x
*If f (x)＞x
*, x wherein
*It is threshold value.If if more than be interpreted as Z=0 logic output 0 and
Logic output 1.
According to embodiments of the invention, input and output can define of equal valuely, and such unit both can be used for input also can be used for output, thereby is used for multiple logical operation.This requires constant
In whole network, be assumed to be same value.Such configuration allows the output of a chaos module of realization door function to be coupled to the chaos module that another realizes certain function, thereby forms the gate array that realizes the mixed logic computing.
Suppose that dynamic f (x) uses in physical unit, must determine the threshold value and the original state signal that satisfy condition, wherein these conditions are from the truth table of realizing.Following table 2 has illustrated in order to realize logical operation AND, OR, XOR and NOT, satisfies the necessary condition of chaos computing element.The input of these symmetries becomes three kinds of different situations with four kinds of situations in the truth table in the table 1, wherein second of table 1 and the third line combined statement be shown the situation two of table 2 kind.
Table 2
When following table 3 has shown the condition of f in satisfying table 2 (x)=4ax (1-x), parameter a=1 wherein, initial x
0With threshold value x
*Exact solution.This constant
For input and output and all logic gates all is public.
Table 3
First embodiment of dynamically configurable logic gate
Get back to Fig. 1 now, it has shown an embodiment of the level circuit framework 100 that is used for dynamically configurable logic gate according to the present invention.In this was realized, a plurality of chaos evolutions were not necessary, only needed single chaos evolution between the threshold circuit of input and output.By realizing this single chaos evolution, simplified circuit substantially about input summer or input summer 102, nonlinear element or chaos circuit 106 and output comparator 108.
As shown in Figure 1, this dynamically configurable logic gate comprises input summer or input summer 102.This input summer 102 receives three signals: import first signal 102, second input signal 122 and first threshold signal 130.This input summer 102 merges these three signals 120,122 and 130, forms the resultant signal 140 as these nonlinear element 104 inputs.These nonlinear properties 104 utilize nonlinear function 106 to act on this total input signal 140 and produce nonlinear output signal 150.Comparer 108 receives this nonlinear output signal 150 and second threshold signal produces this output signal 170.In response to adjusting this total input signal 140 and/or this nonlinear function 106, this nonlinear output signal 150 is corresponding to one in a plurality of Different Logic doors.
Fig. 2 has shown an example of the NAND logic gate that framework 100 is realized.The global shape of curve 200 is substantial class cubic curves among Fig. 2.Point 202 among Fig. 2 all is the position of zero (" 0 ") in input 120 and 122, and puts 202 and more than 160, produced a numeral one (" 1 ") in second threshold value.Fig. 2 mid point 204 is the position of numeral one (" 1 ") in one of input 120 and 122.As what see, on the Y-axis this also more than 1.2 volts, and also think the numeral one (" 1 ").Example hereto, x
*, this second threshold value 160 is selected 1.2 volts on Y-axis.The change of the first threshold 130 and second threshold value 160 has changed this output logic.Point 206 has shown two positions that input all is a numeral one (" 1 ") on this curve.This value is than the x on the Y-axis
*Little a lot, and be considered to digital zero.x
0And x
*Different value can produce the door of other types.
Table 4 is truth tables of this implementation.
Table 4
In table 4, first threshold or reference signal 130 refer to x
0, and second threshold value or reference signal 160 refer to x
*In this example, x
0=0.6V x
*=1.2V and x
0With or x
*In any change and all to change output.
Second embodiment of dynamically configurable logic gate
Fig. 3 is according to synoptic diagram of the present invention, and it has illustrated another embodiment of the level circuit framework 300 that is used for dynamically configurable logic gate.Input summer or input summer 302 receive two input signals 320 and 322, form resultant signal 340.This resultant signal is the input that the non-linear of nonlinear function 306 or chaos element 304 are arranged.This non-linear or chaos element 304 is configured to utilize nonlinear function 306 to resultant signal 340, produces nonlinear output signal 370.This nonlinear function is 306, and/or the dynamic area that is mapped to of resultant signal 340, in response in reference signal 380,382 and 384 at least one variation and change.In response to adjust reference signal 380,382 and 384 and/or nonlinear function 306 in one or more, this nonlinear output signal 370 is corresponding to a plurality of Different Logic doors.
In this circuit framework 300, the reference signal 380,382 and 384 that enters chaotic function disperses.Output stage also can change, so that comparer is removed, digital value produces from nonlinear function 304 then.Because these changes, nonlinear function 306 is changed.Before be used for selecting entering the threshold voltage x of starting point of the aanalogvoltage of chaotic function f (x)
0With another threshold voltage x
*It is the simulation comparison point.In this implementation, three voltages that change f (x) 360 self are arranged.
Fig. 4 has illustrated the implementation of using the XOR gate of circuit among Fig. 3 according to the present invention.As previously mentioned, the low level of reference signal 380,382 and 384 control function f (x) 306 self to high level and high level to low level variation.This curve shape looks like the class cubic curve, but the top of curve and bottom are mild.Use threshold voltage to come the rising edge and the negative edge of tansfer function 306 then.In this embodiment, the attractor of mobile chaotic function 306 mates input 320 and 322, but not comes mobile input voltage 320 and 322 according to the attractor of chaotic function 306.These changes cause having reduced power consumption, and have reduced the physical area of dynamic configurable equipment significantly.
Table 5 is truth tables of the implementation of the XOR gate example that shows among Fig. 5.
Table 5
In this XOR gate example, for all door type, when two inputs all were zero, the input voltage that X-axis shows was about 0.5V; One be input as zero and one be input as for the moment, input voltage is 1.25V; Two inputs all is that input voltage is 2.0V for the moment.Select threshold voltage to be used for the conversion that mid point takes place between input voltage.With XOR is example, and from 0 to 1 first conversion is greatly about 0.88V.From 1 to 0 second conversion is greatly about 1.63V.Therefore, as what see from figure, these three points shown on the curve have produced the truth table for XOR gate.
The 3rd embodiment of dynamically configurable logic gate
In this embodiment, all use digital CMOS in dynamically configurable logic gate, power consumption is further reduced.This embodiment has introduced the main element of other embodiment of dynamically configurable logic gate.Input summer provides enter counter as state space.This configuration changes the mapping of input state space to chaos evolution as threshold mechanism.This non-linear or chaos evolution provides nonlinear function to change output.Because all digitizings, quiescent dissipation almost have been reduced to zero.
Fig. 5 is according to synoptic diagram of the present invention, and it has illustrated another embodiment of the level circuit framework 500 that is used for dynamically configurable logic gate.Input summer or input summer 502 are accepted three input signals 520,522 and 524, form digital state output signal 530,532 and 534.Different is, digital state output signal 530,532 and 534 has been represented the quantity of " 1 " in the input that is present in non-linear or chaos element 504, and wherein non-linear or chaos element 504 has been realized nonlinear function f (x) 504.This controll block 508 is arranged the input of f (x), formation function f (x).In this embodiment, static state almost has been reduced to zero.
Fig. 6 is the synoptic diagram according to input summer 502 among of the present invention, Fig. 5.Input 520,522 and 524 as shown in the figure is feed-in OR door 604, Majority Vote 606 and AND door 608 concurrently.These three signal S1, S2 and S3 represent the state imported.For example, if three at least one that import in 520,522 and 524 are set to ' 1 ', then S1 is ' 1 '.If three at least two of importing in 520,522 and 524 are set to ' 1 ', then S2 is ' 1 '.If three inputs 520,522 and 524 all are set to ' 1 ', then S3 is ' 1 '.
In Fig. 6, ' 0 ' the feed-in configuration block 508 that ' 1 ' and 646 of 644 expressions are represented will be imported the limited field that total state S1, S2, S3 are mapped to nonlinear function f (x) 506.Referring to Fig. 7, the scope of importing total state S1, S2, S3 is presented on the x axle of nonlinear function f (x) 506 when importing 520,522 and 524 not simultaneously.For example, for as inverse gate (NAND, NOR or anti-phase Majority Vote), input state X1, X2, X3 be limited in the x axle 0,0,0} and 1,0, the first half computing between the 0}.In order to realize above-mentioned situation, X2 and X3 all depend on and are input to ' 1 ' of configuration block 508, and X1 depends on suitable total state input S1, S2 or S3 produces correction inverted logic gate function.In another example, in order to produce homophase door (AND, OR and Majority Vote), the scope of input state is limited among Fig. 7 two kinds of centres in four kinds of states, for example 1,0,0} and 1,1,0}.In this homophase door example, X1 depend on ' 1 ' and X3 depend on ' 0 '.By among S1, S2 or the S3 any one applied to X2, suitable logic functionality has just produced.
On the contrary, XOR and XNOR function all need not this input state is restricted to the part of nonlinear function f (x) 506.In order to produce XNOR, state S1, S2, S3 map directly to X1, X2, X3.In order to produce XOR, input state S1, S2, S3 all before being mapped to X1, X2, X3, anti-phase and transpose.In two kinds of situations of XOR and XNOR, all do not have to use for ' 0 ' and ' 1 ' input of configuration block 508.
An example implementation mode of configuration block 508 is presented at as in the part of lower banner for " embodiment of distortion multiplexer in the array ".The output of configuration block 508 is as the input of the XNOR665 of output 570.
Table 6 is truth tables of the embodiment of the XNOR door example that shows among Fig. 5 and Fig. 6.
Table 6
Referring to table 6 and Fig. 5, Fig. 6, input summer 604,606,608 direct input X1, X2, the X3 by nonlinear function f (x) 665 of state S1, S2, S3 are arranged among this embodiment.When all were input as zero, as shown in the table, this input state produced an output 000.Remaining state status is as follows, and 100 produce zero, and 110 produce one, 111 produces zero.
Among the embodiment of this dynamically configurable logic gate, table 7 has shown the abundant set of two inputs and three input logic gates.Size, power consumption and configuration complexities all further reduce.Quiescent dissipation has been eliminated.
Table 7
Fig. 7 is the output waveform 700 according to the logic that is realized by dynamically configurable logic gate among of the present invention, Fig. 5.
This circuit implementation non-linear or the chaos element
Fig. 8 is the embodiment that shows among Fig. 3, and wherein the importation is not in conjunction with reference voltage.Especially, input circuit 800 receives two input VINA840 and VINB842 among Fig. 8.In order intactly to illustrate the integrated circuit of crossing over Fig. 8, Fig. 9 and Figure 10 three width of cloth figure, Fig. 8 is electrically coupled to Fig. 9 by node A, B and C.Accordingly, Fig. 9 is electrically coupled to Figure 10 by node D, E, F and G.
Fig. 9 and Figure 10 be according to synoptic diagram of the present invention, illustrated the part of implementation of exemplary circuit of the nonlinear element of the nonlinear function that one of produces among Fig. 1 and Fig. 3 circuit.Based on one quantity in the input, these two inputs are converted into the combination of three voltage levels.Fig. 9 realizes this non-linear circuit 900 non-linear or chaotic function f (x).This nonlinear function is based on three current mirrors 910,912 and 914 in this example, and the transition point of nonlinear equation F (x) is controlled in the output of these three current mirrors.These current mirrors 910,912 and 914 are by threshold voltage VT1920, VT2922 and VT3924 control.Node B, especially, three current mirrors 910,912 and 914 comprise three differential amplifiers, these three differential amplifiers combine two electric current N2 of formation and N3.(VT3), a saltus step in the differential amplifier causes the difference between current saltus step between N2 and the N3 for VT1, VT2, thereby changes the state of output voltage V out950 as long as input voltage VI crosses threshold reference.
Storer latching logic door embodiment
Figure 11 is 1100 a synoptic diagram in a circuit according to the invention, and it has illustrated an embodiment of the memory component of being realized by three input D-Latch, and wherein D-Latch is used for dynamically configurable logic gate 1104.Dynamically configurable logic gate 1104 receives input 1122 and 1124, produces output 1150.Circuit 1100 comprises multiplexer 1110 and forms storer and latch.Multiplexer 1110 receives the input 1120 of dynamically configurable logic gate 1102, and the output 1150 of dynamically configurable logic gate 1102 is optionally multiplexed by clock input 1128.Different is that clock control input 1128 is used for switching in input 1120 with between feeding back 1150.In addition, this feedback has strengthened the input value in the clock latch stage.When clock in the transparent stage, outside this door of input control makes it capable of being combined fully.When clock switches to the clock latch stage, this output is switched to input, thereby strengthens and keep outside input value.In this, outside input can change but not influence this output.Other input can be used for asynchronous set or reset signal.Table 8 has been illustrated D-Latch different among Figure 11.
Table 8
Among this embodiment, " latching type " label column has shown the configuration corresponding to the different D-Latch of three kinds of input kinematic nonlinearity elements." IN1 " input is always given and is latched " D " input.In addition two kinds of inputs or rigid line connects, or be used for " Set ", " Reset " and " Set/Reset " both.The output row are the output of kinematic nonlinearity element.Rely on the configuration of other input, the kinematic nonlinearity element is programmed to suitable door type, is created in " component type " and plants the D-Latch that describes.For example, for the D-Latch that asynchronous reset is arranged, if second input remains zero, this chaos goalkeeper is set to " Majority Vote " door.If second input remains one, this chaos goalkeeper is set to " AND " door.Having allowed like this has dirigibility in the unit programming, for the encapsulation algorithm provides optimization.
Table 9 has been illustrated the different D-Latch that asynchronous reset is arranged among Figure 11.
Table 9
Table 9 has shown the truth table corresponding to the D-Latch that asynchronous reset is arranged.When clock is zero, this is latched in the transparent stage.In this stage, it is as common door capable of being combined.If ignore the 3rd input, this door is programmed to " AND " door.When clock is a high level, this resets is the input of unique influence output.Be low level asynchronously if this resets, this output is reset to zero.Follow the maintenance high level that resets, when clock changed from the low level to the high level, the value of the output of coupling input (following suitable setting and maintenance) value was latched and remains on the clock high level period.In transparent stage and latch stage, switch this clock value by anti-phase this clock.This allows this to latch the data of seizure at negative edge.In the inversion clock stage,, created a d type flip flop like this by two D-Latch are placed back-to-back.
Dynamically configurable logic gate array summary
For more complicated logic is provided, this dynamically configurable logic gate links together and can form bigger digital function.The first step is the situation that forms the similar FPGA of a logic element combinatorial logic element capable of being combined (CLE).This CLE is used for representing the advanced reference of each dynamically configurable logic gate.This CLE is different from the FPGA framework, because this design does not have special-purpose trigger.The substitute is, four dynamically configurable logic gates are combined into single CLE among this embodiment, make to have allowed huge configuration flexibility at logic and trigger or between latching.For example, these same door can be configured to two triggers, a trigger and two 3 input gates, perhaps four 3 input gates.Other possibility comprises the various combination of logic gate and D-Latch.If improve the combination degree or improved the ratio of trigger then have more FPGA that do not use logic with respect to design, considered better dirigibility like this.
One of this embodiment is designed to microprocessor or microcontroller has used the function design.No matter framework, the product of bottom chip can both utilize this dynamically configurable logic gate to construct reconfigurable product easily.The single selectable ChaoGate embodiment that is used for array
Figure 12 is according to synoptic diagram of the present invention, and it has illustrated an embodiment about the level circuit framework of the dynamically configurable logic gate that is used for bigger array.Among this embodiment, it is the part of dynamically configurable logic gate array that the dynamically configurable logic gate 1202 of two inputs 1220 and 1222 is arranged.Among this embodiment, four global thresholds 1230,1232,1234 and 1236 are used for switching nonlinear function 1206 through multiplexer 1210,1212 and 1214, thereby switch between two kinds of possibility voltages corresponding to each threshold voltage.Be connected the selection of personalized threshold voltage by each input with one of four global thresholds 1230,1232,1234,1236.Allow for the personalized door of each possible combination of function structure like this.These doors are zero according to this construction of function when selecting the position, and f (0) 1206, is one when selecting the position, f (1).For example, a class door has " AND " f (0) and " XOR " f (1).Necessarily, construct other door.Such example comprises: f (0)=" NAND ", f (1)=" NOR "; F (0)=" NOR ", f (1)=" NAND ", f (0)=" OR ", f (1)=" OR " or the like.Construct these permissions and use known place and route technology in the ASIC design.In this example, although the ASIC place and route technology of utilization standard, its result is similar to the use uniform array and by single via mask this array is programmed, under correct global threshold voltage, the input of each analog multiplexer is connected to dynamically configurable logic gate 1202 with this.Use this framework, dynamically configurable logic gate 1202 becomes the building block that is suitable for bigger function array.Use this framework, change the bottom logic by changing single position, this array can also be changed or " distortion " between two kinds of functions, and wherein the bottom logic is realized by each dynamically configurable logic gate 1202.The example of these two kinds of functions will be at title for further discussing in the part of " example that switches between multiple function ".
Use the embodiment of the array of via framework able to programme
VPGA (via programmable gate array, via battle array able to programme gate array) is similar to FPGA, is embodied in the frequent programmable gate structure of forming this logic array.Yet because wiring connects by via rather than adopts the door that activates, these logical blocks can encapsulate compactlyer together.Figure 13 has illustrated the xsect of this general array 1300 according to the present invention.Level on the unit is the uniform structure of standard with vertical wiring.By one or two-layer interpolation via make connection, can realize personalization.
Except using the known advantage of single design map to the standard VPGA design of array, the present invention arrives general array with a plurality of design map.Among the embodiment, CLE designed to be able between two to four kinds of designs and switches, and wherein these two to four kinds of designs select the position to realize by the overall situation.Figure 14 has illustrated CLE and has used the embodiment that selects the position as array function to be out of shape according to the present invention.The reconfigurable CLE change that this CLE is described by the front and showed.If like this, the multiplexer of mentioning is not the configuration that is used as this circuit, but is used for selecting in four circuit that are programmed.These by the pet name be " distortion multiplexer " (" Morphing Multiplexer ", MM).As shown in figure 14, each MM has four inputs (in0, in1, in2 and in3) and two selection positions.Therefore, provided four kinds of designs, A, B, C and D, when design A realized in this array, its all wiring was connected to the in0 of MM.Similarly, design B is connected to the in1 of MM, corresponding similarly in2 and the in3 of being connected to D of design C.Under this mode, select the position when these two overall situations and change, the whole functional of circuit changes.
The clock routing that enters each element among Figure 14 is a special case.Obviously, comprehensively clock scheme is very important for control clock skew in array.This will help to set up easily and the maintenance problem synchronously at array.Among each CLE, each dynamically configurable logic gate becomes element capable of being combined, and this composition element is D-Latch or half trigger, depends on clock and how to connect." CLK " and " not CLK " signal can provide two stages or one of transparent stage is provided to D-Latch to trigger.By being connected to " Gnd ", ChaoGate is configured to capable of being combined.
Among this embodiment, having described has configurable of a plurality of chaos doors.Among the embodiment, use the array of asic technology between two functions, to switch.These are " rigid line connection " or predetermined function.Other embodiment structure provides configurable of greater functionality selection.More function selects to provide dynamic and programmable selection to realize to current FPGA.Be grouped into single by being about to a plurality of elements, the top layer wiring problem becomes and is more convenient for managing.The target of this design is to allow a plurality of input and output, function flexibly, and trigger/latch is all capable of being combined, and minimizes control structure and simplify reconfigurable.The each side of this embodiment comprises configurable wiring, particularly top layer wiring, and wherein different functions has different structures and data stream (for example, totalizer VS multiplier).Between ASICI and FPGA, provide balance like this, eliminated the characteristic that lacks dirigibility in the ASIC wiring.The FPGA of configurable wiring is about disposing too many position fast.
Configurable only switches in two kinds of functions among this embodiment, and the wiring modification remains on minimum.Yet what pay particular attention to is that two kinds of similar functions can have diverse wire structures.For example, totalizer and multiplier all are the ALU elements, but they can how different fully from being input in the output in data stream.When the expansion demand was any function of array configurations, the wiring of top layer also need possess dirigibility in its configuration.
The embodiment that is used for the distortion multiplexer (MM) of array
Figure 15 has illustrated 4 pairs 1 multiplexers 1500 according to the present invention.As figure, 4 pairs 1 multiplexers 1500 are made of 32 pairs 1 multiplexers 1512,1514 and 1516.Lines that referred to by the first cross-hatched pattern 1502 (redness) and are two metal levels by the lines that the second cross-hatched pattern 1504 (green) refers to, they are the masks that are used for the standard of array.Long vertical metal 1506 (green) is represented global routing.The different tracks of this metal have the different output from other.The bonding jumper 1508 (redness) of level is connected to global routing by the via layout.For the bottom multiplexer of describing among Figure 15 1514, metal 1508 (redness) is this multiplexer of bypass also, and via directly connects next multiplexer layer 1530.Top layer 1532 has also adopted the structure of the whole multiplexer of bypass.When the input of multiplexer structure is general, the bypass performance has improved the dissipation of synchronism and power consumption.
This MM is used for being each design alternative door type in dynamically configurable logic gate.MM will appear in Fig. 5 and Fig. 6's " configuration " cloud 638, the 3rd embodiment of the dynamically configurable logic gate of describing before corresponding to.They will be programmed in the via of describing before.According to selecting the position, make dynamically configurable logic gate become four kinds of different door type like this.
Select array structure embodiment
As Figure 16, it has shown the array 1600 that can independently control selection in partial array.Selecting the position is overall in each array.Yet the ASIC that is made up of a plurality of independent array is connected to different selection positions.Provide greater flexibility for creating different frameworks like this.For example, processor type can be selected from I/O or control interface, though under the control of processor, different peripherals can be selected in the other parts of chip.
This selection scheme also can be used in the processor of command decode is arranged, and wherein command decode is that processor is distinctive, but the ALU part is selected (for example, multiplier and divider instruction or the like) by decoding block.This selects compared with an overall situation that is used for whole ASIC, has allowed greater flexibility.
The example that between a plurality of functions, switches
Below be to use dynamically configurable logic gate, through revising the non-exhaustive tabulation of the circuit that difference in functionality is provided.
Another example is that Cyclic Redundancy Check calculates, and it can switch between two different CRC.The cyclic redundancy check (CRC) circuit of superfluous She's checking circuit of the circulation of n position and m position, wherein n is different positive integers with m, is input to 8 inputs of CRC as 4 of CRCS.Figure 17 be according to the present invention, the sketch that uses dynamic configurable logic between two different cyclic redundancy check (CRC) functions, to switch.Among this embodiment, this CRC is identical polynomial expression, but the input of CRC algorithm changes between 8 to 16.The input width is because CRC changes logical equatiion.Use same circuit, this application is one and passes the example that CRC comes double bandwidth.This logic array importance of design like this is the difference that minimizes wiring between algorithm.
Another example is first decoder/encoder and second decoder/encoder that is used to handle different communication protocol.Wherein first decoder algorithm is different demoders with second demoder, and for example the SPI interface is to the I2C interface.Two different communication protocols require complicated state machine information and data stream among this embodiment.Especially, this circuit can be reconfigured for SPI (Serial Peripheral Interface) or I2C (inter IC control) bus implementation among this embodiment.Figure 18 be according to of the present invention, two communication protocols or the sketch that switches between the demoder of state machine information is arranged.
Another example is first arithmetic algorithm and second arithmetic algorithm.First arithmetic algorithm is different arithmetic algorithms with second arithmetic algorithm, for example, from the totalizer totalizer to multiplier.Figure 19 is the sketch according to ALU (ALU) of the present invention, that three changeable functions are arranged.Among this embodiment, ALU comprises a function of three changeable functions, two arithmetic functions (totalizer, multiplier, divider, barrel shifter or other) and temporary storage.The one FPCGA demonstration has realized little ALU or ALU.This ALU can switch between at least two arithmetic functions, and diverse function, and for example little first in first out or first in first out (FIFO) are extensive use of at the electronic circuit that is used for cushioning with current control.This test has stepped an important step for the possibility that shows following reconfigurable calculating.By the control of a microcontroller interface, these three kinds of functions have been attached in the single logic array.This microcontroller interface can handoff functionality, then writes data to this interface, at last from this interface read back results.
Unrestriced example
Circuit described above is the part of design of integrated circuit.This chip design is being created in graphical computer programming language, be stored in the computer-readable storage medium (for example disk, tape, physical hard disk, or as the virtual hard disk of memory access network).If the deviser does not make chip or does not make the mask that is used to make chip, the deviser by physical unit (for example by the copy of this design of storage medium stores is provided) or the electronization (for example passing through Internet), will finally design and send to these entities directly or indirectly.The design of this storage changes into suitable form and (for example, GDSII) is used for the making of mask, comprising a plurality of copies of this chip design.The problem of this chip design is to be formed on the wafer.This mask is used to define the zone of the wafer (and/or the layer on it) of etching or its treated with same.
Method described above is used for the making of integrated circuit (IC) chip.
Final integrated circuit (IC) chip is by form (that is to say as single wafer a plurality of not chips of encapsulation arranged), bare chip or the form distribution to encapsulate of wright with raw wafer.In the situation of back, this chip is installed in the single Chip Packaging (plastic carrier or other high grade carrier that attached lead on motherboard is for example arranged), or in multicore sheet encapsulation (for example use surface interconnected or imbed interconnected wherein one or both ceramic monolith).In any case, this chip is integrated with other chip, discrete circuit element and/or other signal handling equipment then, as following one of them a part: (a) intermediate product, motherboard for example, or (b) final products.These final products can be any products that comprises integrated circuit, and its scope is from toy and the low-grade high-end computer product that is applied to display, keyboard, other input equipment and central processing unit.
Although specific implementation mode of the present invention has been discussed, without departing from the spirit and scope of the present invention, those skilled in the art can make amendment to this specific implementation mode.So scope of the present invention is not subjected to the restriction of specific implementations, claim has subsequently covered any such application, modification and implementation within the scope of the present invention.
Claims (25)
1. dynamically configurable logic gate comprises:
Input summer receives at least the first input signal and at least the second input signal, thereby produces at least one total input signal; And
At least one nonlinear element is configured at least one nonlinear function is used for this total input signal, thereby produces at least one nonlinear output signal;
Wherein in response to adjust in this total input signal and this nonlinear function at least one, the output signal of this dynamically configurable logic gate is corresponding to one in a plurality of Different Logic doors.
2. dynamically configurable logic gate as claimed in claim 1 is wherein adjusted this total input signal this resultant signal is mapped in the field different with this nonlinear element, different dynamic areas at least one.
3. dynamically configurable logic gate as claimed in claim 1 is wherein adjusted this nonlinear function and is comprised modification this nonlinear function itself.
4. dynamically configurable logic gate as claimed in claim 1, wherein this nonlinear function further comprises at least one input, thus its reception control signal is adjusted in this total input signal and this nonlinear function at least one.
5. dynamically configurable logic gate as claimed in claim 1, thus wherein at least one in this total input signal and this nonlinear function is adjusted the output signal that produces this logic gate, and the output signal of this logic gate is corresponding to following any one door:
The AND door;
The NAND door;
The OR door;
XOR gate;
The NOR door;
XNOR；
The NOT door;
The ONE door; And
The ZERO door.
6. dynamically configurable logic gate as claimed in claim 4, this non-linear output feedback that is this input summer wherein, thereby and wherein at least one in this first reference signal and this second reference signal and this control signal be adjusted and produce the output signal that is relevant to this logic gate that storer latchs.
7. dynamically configurable logic gate as claimed in claim 1, wherein this non-linear output feedback that is this input summer is relevant to the output signal that storer latchs so that produce.
8. dynamically configurable logic gate as claimed in claim 7, further comprise: at least one multiplexer, it is accompanied by this nonlinear output signal and selects one at least in this first input signal and this second input signal, thereby produce input signal for this nonlinear element, thereby form a D-Latch.
9. dynamically configurable logic gate comprises:
Input summer receives at least the first reference signal and at least one input signal, thereby produces at least one resultant signal; And
At least one nonlinear element is configured at least one nonlinear function is used for this resultant signal, thereby produces at least one nonlinear output signal; And
Wherein in response to adjust in this first reference signal and this nonlinear function at least one, this nonlinear output signal is corresponding to one in a plurality of Different Logic doors.
10. dynamically configurable logic gate as claimed in claim 9 further comprises:
At least one comparer produces the logic gate output signal from least the second reference signal and this nonlinear output signal;
Wherein in response to adjust in following at least one: i) this first reference signal; Ii) this nonlinear function; And iii) this second reference signal, the output signal of this non-linear logic gate is corresponding to one in a plurality of Different Logic doors.
11. dynamically configurable logic gate as claimed in claim 10, at least one during wherein said adjustment is following: i) this first reference signal; Ii) this nonlinear function; And iii) this second reference signal, further comprise:
At least one control function is used for this resultant signal is mapped at least one of the field different with this nonlinear element, different dynamic areas.
12. comprising, dynamically configurable logic gate as claimed in claim 10, this nonlinear function of wherein said adjustment revise this nonlinear function itself.
13. dynamically configurable logic gate as claimed in claim 9, thus wherein at least one in this total input signal and this nonlinear function is adjusted and produces this nonlinear output signal, and this nonlinear output signal is corresponding to following any one door:
The AND door;
The NAND door;
The OR door;
XOR gate;
The NOR door;
XNOR；
The NOT door;
The ONE door; And
The ZERO door.
14. dynamically configurable logic gate as claimed in claim 9, wherein this nonlinear output signal is the feedback of this input summer, is relevant to the output signal that storer latchs so that produce.
15. dynamically configurable logic gate as claimed in claim 14 further comprises:
At least one multiplexer, it is accompanied by this nonlinear output signal and selects one at least in this first input signal and this second input signal, thereby produces input signal for this nonlinear element, forms a D-Latch thus.
16. a dynamic configurable element comprises:
At least two inputs;
Control signal;
Output signal, to this input at least one as feedback; And
At least one dynamically configurable logic gate is used to receive this input, and wherein a kind of as in a plurality of Different Logic door type of this logic gate so that according to the selection of this control signal at least, produces the output signal that latchs corresponding to storer.
17. dynamic configurable element as claimed in claim 16, wherein this logic gate is carried out computing corresponding to a plurality of Different Logic doors.
18. dynamic configurable element as claimed in claim 16, wherein to latch be set-reset and latch to this storer.
19. dynamic configurable element as claimed in claim 16, wherein to latch be D-Latch to this storer.
20. a dynamic configurable logic element arrays comprises:
At least one multiplexer, it selects one at least in first control signal and second control signal, select control signal thereby produce at least the first array thus;
The first dynamic configurable logic element, wherein according to this first selects control signal at least, a kind of as in a plurality of Different Logic component types of this first logic element; And
At least the second dynamic configurable logic element, wherein according to this first selects control signal at least, a kind of as in a plurality of Different Logic component types of this second logic element;
Wherein select control signal in response to first, by the change of dynamic configurable logic element, at least one during realization logical expression and storer latch.
21. dynamic configurable logic element arrays as claimed in claim 20, the wherein d type flip flop of at least two formation capable of being combined in this dynamic configurable element.
22. dynamic configurable logic element arrays as claimed in claim 20, wherein this at least the second dynamic configurable logic element comprises at least one output and at least the three dynamic configurable element, and the 3rd dynamic configurable element has at least one input;
Second multiplexer, it selects one at least in the output of the output of this first dynamic configurable element and the second dynamic configurable element, can select input thereby create, and this can select to import the input of feed-in the 3rd dynamic configurable element.
23. dynamic configurable logic element arrays as claimed in claim 20, the wherein set-reset flip-flop of at least two formation capable of being combined in this dynamic configurable element.
24. dynamic configurable logic element arrays as claimed in claim 20, wherein utilize at least one via mode door array, this multiplexer, this first dynamic configurable logic element and this second dynamic configurable logic element are connected at least one wiring.
25. dynamic configurable logic element arrays as claimed in claim 20, wherein this logical expression of being realized by this dynamic configurable logic array has realized being used for the logic of at least one pair of function, and wherein this function is divided into following situation
First communication protocol and second communication agreement, wherein this first communication protocol is different consensus standards with this second communication agreement;
First arithmetic algorithm and second arithmetic algorithm, wherein this first arithmetic algorithm is different arithmetic algorithms with this second arithmetic algorithm;
N position cyclic redundancy check (CRC) circuit and m position cyclic redundancy check (CRC) circuit, wherein n is different positive integers with m;
First demoder and second demoder, wherein this first decoder algorithm is different demoders with this second demoder;
First scrambler and second scrambler, wherein this first scrambler algorithm is different scramblers with this second scrambler;
Memory array and processor.
Applications Claiming Priority (2)
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| US11/615,382 | 2006-12-22 | ||
| US11/615,382 US7453285B2 (en) | 2006-12-22 | 2006-12-22 | Dynamically configurable logic gate using a non-linear element |
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| CN101632065A true CN101632065A (en) | 2010-01-20 |
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| US (1) | US7453285B2 (en) |
| EP (1) | EP2095223A4 (en) |
| CN (1) | CN101632065A (en) |
| WO (1) | WO2008079964A1 (en) |
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| CN105915329A (en) * | 2016-02-29 | 2016-08-31 | 南京理工大学 | Digital-analog hybrid chaotic circuit including logic device, and operation method thereof |
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| CN105915329A (en) * | 2016-02-29 | 2016-08-31 | 南京理工大学 | Digital-analog hybrid chaotic circuit including logic device, and operation method thereof |
| CN111752223A (en) * | 2020-06-29 | 2020-10-09 | 配天机器人技术有限公司 | Signal configuration method, input/output device and computer storage medium |
| CN111752223B (en) * | 2020-06-29 | 2022-04-01 | 配天机器人技术有限公司 | Signal configuration method, input/output device and computer storage medium |
Also Published As
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| EP2095223A4 (en) | 2011-06-29 |
| EP2095223A1 (en) | 2009-09-02 |
| US20080150578A1 (en) | 2008-06-26 |
| WO2008079964A1 (en) | 2008-07-03 |
| US7453285B2 (en) | 2008-11-18 |
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